The host has donned the cowboy hat and harmonica multiple times in the past for folk-rock renditions of other pop favorites such as "Whip My Hair" and the "Fresh Prince of Bel-Air" theme, and was even joined by Graham Nash and David Crosby for a performance of "Party in the U.S.A."

It only makes sense that Fallon would take advantage of the trio's appearance to promote their forthcoming live box set "CSNY 1974" and tour by taking on the reigning Billboard chart-topper while in character as their elusive bandmate.

For the purists, Crosby, Stephen Stills and Nash also performed "Teach Your Children" on the show.

A story about people who love one another made by people who clearly love one another, "Parks and Recreation" ended its seven-season, zigzag run through prime time Tuesday night on NBC. In the final shot, star Amy Poehler, as public servant Leslie Knope, faced the camera, all aglow, and...

The finale of "Parks and Recreation" aired on NBC on Tuesday night, and in a bold move, the show went further into the future than it already had in its final season, revealing what the public servants of Pawnee, Ind., would be doing decades from now.

Grammy Award-winner Patti LaBelle and Michael Sam, the NFL's first openly gay draft pick, are two of the 11 celebrities announced Tuesday as part of the upcoming 20th season of ABC's "Dancing With the Stars."